Lamp.



L. L. PF'EIFER.

LAMP.

- APPLICATION FILED JUNE 28, 1915 Patented Dec. 21, 191 5 UN ED LEOIPFEIFER, onooLU'MBUs, orno, nssIGNon To THE JOHN W. anown. MANUFAC-To'laZl whom; it may concern;

State of'Ohio; have inventedcertain new and useful Improvements inLamps, of which the following is a specification.

TUBING COMPANY, or COLUMBUS,

- ".OFFIC} OHIO, A; CO liftCPOlEtA'llPION OF OHIO.

LAMP.

' 1 Specification of Letters Ilatent.

. iPatented.l)ec,f21,1915;

.- Be it known that I, LE0

L PFEIFER, a'

ucitizen ofthe..Uniteol States, residing at Columbus, in the county of11 ranklin and My invention} relates to lamps, particularly of the oilburningt'ype adaptedfor use,

11 this collar member being also provided 6} with-a plurality ofapertures 12, whereby headlights for these vehicles; One great dif inconnection with, automobiles, serving as "ficulty with alloilgjburning"headlights ,or .side 1ights,.- as they are sometimescalled,

' has been' that the rapid movement of-the lamp through theaircausesl'an' influx of air through-the ventilator openingsusuallyadjacent-thetop of the lamp th s influx of "air usually being so, greatas to. at times 'causefthe blowing out of the flame.

Havingthis in mind, the main objectlof .my invention lresides in theprovision of a --peculiarly constructedychimney, wherein it ispractically inrpos'sible to havea greater" amount of air enterthe'combustion chamber forming the, lamp than that required-t portthe-necessarycombustion.

The preferred e o supinbod'ment' of my inveption is shown in theaccompanying sheet of a drawings, in which similar characters ofreference designate corresponding parts, and

' n whrc a-view in sideelevation showof the internal'chimney'structure,and, Fig.

is afs ection taken on line'3+-3 of Fig. 2.

' .In---thj drawings, there-is. shown an-oil 1 1' receptacl designatedby the reference nu-.

meral l, this oil receptacle being of any pre-' ferred type-and carryingthe c0nvent1onal-- typ'eof burner structure .2 at-its upper end;

5 This burnerstructure extends intothe coni- -bustion chamber of a,vcasing body des gbeing somewhat smaller in size than" the n'atedgenerally. "'y. the reference numeral This casingfbo [y is formed of an;exterior- "member 4 and 'an interior -member 5., the

latter being .more or 'less of 'a'reflector and I member.4, -therebyproviding a space 6 betweenithem. The forward end of the'casing' body isclosed by means of a lens shown at '7, this being-the direction at whichthe rays of light are pro ected. I This casing body. .is surmounted by a'chimneyand a ventilator structure,' the ventilator structure comprising a i nterna-lmember as is 'shown' at 8, .thIS member .being-provldedwitha series of apertures 9 along. its loweredge and such as are shownat lO'at its top. This ventila f tor member 8 seats itself upon 'anop'ening 6 formed 'in the top' portion. .of the casing. 4

and-in 'order to maintain this portion {l and the portion 5 in spacedrelation, I have provlded-a collar member such as is shown at and issecured toithe interior of the-reflector 1 member 5', asis shown. Itsupper end is provided with a series of openings such as shown at 14 andthe entire structure held in assembled relation by means of the cap andscrew structure 15, threading itself into the top wall-of thechimney asis shown atl6. '80.

' Particular reference to Fig. 1 willshow that the openings 14 in thechimney 1;? are designed to register with similar openings' 17 formed inthe ventilator member '8 and y in this manner the air has free passagedown through the top of they lamp'into the combustion chamber whenmoving at a comparatively rapid ,gait.--. When-this movement issufficiently great, the influx of air at this [point will be greaterthan the draft created 9 bythe escaping productsofpornbustion from I theburner 2 and it is, therefore likely that the flame will beextinguished. In order to Overcome this, I have provided the chimney 13with a frusto-conical member such as'is shown at 18, the restricted endof; this frusto-conical memberbeing disposed adjacent the upper open endof the chimriey, but slightly beneath-its level. -As is shown in thedrawings, this member 18 is rigidly held in position b-y means of rivetsor any other desired type of fastening such as is shown at 19, thismemberbeing held in close relation with the chimneymember- 13 to prevent'the admission of air at-this point. It 10? will, therefore, beapparent that the restricted opening of the "member 18-forms what may betermed a dead air space 20 and the rapid movement of. the lamp throughthe air will pocket a'portion'of the air in this space to form a cushionor a pres sure medium to prevent the direct admission of air-into thecasing body itself; The natural tendency, therefore, will be for the airto pass directly through the openings 14L and 17. Also, the upper end ofthe member 18 smaller in area than its lower end and consequentlytheyelocity of flow of the air through the lcwer, :open end Will'be'considerably less than its flow through the upper end and inzthismanner the admission of an-amount of air sufficient toextiiighish theflame in ,.the burner 2, is prevented.

From the foregoing description, taken in I connection with theaccompanying sheet of drawingsfltwill bevapparent that I, have providedaty'pe of, lamp wherein the chimney structure is regulated to such. anextent that the flame carried, by the burner 2- will not be,extinguished no matter what the speed of travel ofthe lamp through theair may be[ This is rendered possible by the use of the frusto-conicalmember 18 whose restriated end is disposed adjacent the top of thechimney as is shown, thereby providing the dead air space indicated at20.

What I claim, is: I In an oil burninglamp, an oil receptacle,

a casing body attachedto said receptacle, a

burner structure within said casing and operatively mounted inconnection with said receptacle, a Ventilator member rising fromsaidcasing and formed with a series of openings adjacent its top, a chimneywithin said ventilator and open at lts'lovver end to be in communicationwith the interior of said casing, said chimney having a series of openngs in its side walls adJacent its topclosely fitting the base portionof the.

chimney, thereby forming a dead air space between the chimney and thefrusto-conical member. v v

3 In testimon; whereof I aflix mysignature in presence of two witnesses'-f LEO L. PFEIFER.

Witnesses 2 I o. o. simmm m, A, L. PHELPS.

